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Vulnerability Details :

CVE-2025-26386

Summary
Assigner-jci
Assigner Org ID-7281d04a-a537-43df-bfb4-fa4110af9d01
Published At-28 Jan, 2026 | 11:24
Updated At-28 Jan, 2026 | 15:49
Rejected At-
Credits

Stack-based Buffer Overflow in Johnson Controls iSTAR Configuration Utility (ICU) tool

Johnson Controls iSTAR Configuration Utility (ICU) has Stack-based Buffer Overflow vulnerability. This issue affects iSTAR Configuration Utility (ICU) version 6.9.7 and prior. Successful exploitation of this vulnerability could result in failure within the operating system of the machine hosting the ICU tool.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:jci
Assigner Org ID:7281d04a-a537-43df-bfb4-fa4110af9d01
Published At:28 Jan, 2026 | 11:24
Updated At:28 Jan, 2026 | 15:49
Rejected At:
▼CVE Numbering Authority (CNA)
Stack-based Buffer Overflow in Johnson Controls iSTAR Configuration Utility (ICU) tool

Johnson Controls iSTAR Configuration Utility (ICU) has Stack-based Buffer Overflow vulnerability. This issue affects iSTAR Configuration Utility (ICU) version 6.9.7 and prior. Successful exploitation of this vulnerability could result in failure within the operating system of the machine hosting the ICU tool.

Affected Products
Vendor
Johnson Controls
Product
iSTAR Configuration Utility (ICU)
Default Status
unaffected
Versions
Affected
  • iSTAR Configuration Utility (ICU) tool version 6.9.7 and prior (custom)
Problem Types
TypeCWE IDDescription
CWECWE-121CWE-121 Stack-based Buffer Overflow
Type: CWE
CWE ID: CWE-121
Description: CWE-121 Stack-based Buffer Overflow
Metrics
VersionBase scoreBase severityVector
4.07.1HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Version: 4.0
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-100CAPEC-100 Overflow Buffers
CAPEC ID: CAPEC-100
Description: CAPEC-100 Overflow Buffers
Solutions

Update the ICU to version 6.9.8

Configurations
Workarounds
Exploits
Credits
finder
Bughunter Tenable
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories
N/A
https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-04
N/A
Hyperlink: https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories
Resource: N/A
Hyperlink: https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-04
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:productsecurity@jci.com
Published At:28 Jan, 2026 | 12:15
Updated At:29 Jan, 2026 | 16:31

Johnson Controls iSTAR Configuration Utility (ICU) has Stack-based Buffer Overflow vulnerability. This issue affects iSTAR Configuration Utility (ICU) version 6.9.7 and prior. Successful exploitation of this vulnerability could result in failure within the operating system of the machine hosting the ICU tool.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.07.1HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-121Secondaryproductsecurity@jci.com
CWE ID: CWE-121
Type: Secondary
Source: productsecurity@jci.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-04productsecurity@jci.com
N/A
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisoriesproductsecurity@jci.com
N/A
Hyperlink: https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-04
Source: productsecurity@jci.com
Resource: N/A
Hyperlink: https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories
Source: productsecurity@jci.com
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

1Records found
CVE-2025-26382
Matching Score-6
Assigner-Johnson Controls
ShareView Details
Matching Score-6
Assigner-Johnson Controls
CVSS Score-9.3||CRITICAL
EPSS-0.11% / 28.88%
||
7 Day CHG+0.01%
Published-24 Apr, 2025 | 19:47
Updated-29 Apr, 2025 | 13:52
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Johnson Controls Software House iSTAR Configuration Utility (ICU) Tool

Under certain circumstances the iSTAR Configuration Utility (ICU) tool could have a buffer overflow issue

Action-Not Available
Vendor-Johnson Controls
Product-iSTAR Configuration Utility (ICU)
CWE ID-CWE-121
Stack-based Buffer Overflow
Details not found